Casting-machine.



No. 746,244. PATENTED DEG. 8`,.1903.

- AP...BAGGALEI.

CASTING MACHINE.

APPLICATION FILED MAR, 16, 1903. No MODEL. a SHEETS-SHEET 1.

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yNo. 746.244. PATENTED DEC. 8, 1903. R. BAGGALEY.

CASTING MACHINE. APPLICATION FLED MAR. 16, 190s..

No MODEL.

we slss PATENTB DB0. 8,1903. R. BAGGALEY.

CASTING MACHINE.

APPLICATION FILED MAR. lef 1903.

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No MODEL.

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UNITED STATES Patented December 8, 19,03.l

vPATENT OFFICE.

RALPHBAGGALY, OF PITA'ISBURG, PENNSYLVANIA.

CASTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 746,244, dated December 8, V1903.

Application iiled March 16, 1903. Serial No. 147,984. (No model.)

T0 a/ZZ whom it may con/cern.

Be it known that L-RALPH BAGGALEY, of Pittsburg, Allegheny county, Pennsylvania,

have invented a new and useful Casting-Machine, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specication, in which- Figure 1 shows in vertical central section a casting-machine constructed in accordance with my invention. ,Fig.2 is a 'vertical'section on the line II II of Fig. 1. Fig..3 is a plan View of the machine'. Figs. 4, 5, 6, and 7 are end views and elevations, partlyin section, illustrating two of the designs of pigs which may be cast with my machine.

The operation of casting copper pigs as heretofore conducted has been very wasteful,

sult, I use, preferably, water-jacketed moldsr whose molding-cavities are designed so thatv the fins resulting from the castingprocess are concentrated. Fins when so concentrated may be readily and completely removed by machinery, so that in shipping it is impossi- 'ble for any portion of the pig, however small,

to be broken loose, and thus lost.

In the accompanying drawings, 2 repre-v sents the frame of the machine, and 3 is the mold, which is formed with hollow walls 4 for the passage of a stream of water and with tru'nnions 5 6, through which the inlet and outlet pipes 7 and 8 extend for the introduction of water to cool the mold. lThe water enters a chamber 4"at one side ofthe mold, from the top of which it overflows through a passage 4a into the main water-passage 4 varound the mold-cavity. Thence after lilling the main cavity, it flows through a passage 4b at the top into a side chamber 4,

from which it flows through the outlet-pipe 8.

vAs the mold is filling theair rises to the top of the chambers 4, 4', and 4C and is displaced through the passages 4a`and 4b and is caused to go out through. the pipe 8. To' rotate the mold on its trunnions',-I prefer to employ al .pinion 9, which is Vfixed to one of the trun-v Vwhich the cylinder is operated.

At the base of the mold is a movable plunger 13, which is adapted t-o be moved inwardly to or nearly to the upper end of the mold when the mold is rotated` into inverted position, so that the plunger' mayforcibly eject the pig from the mold. I am thus enabled to use a mold whose cavityissubstantially cylindrical instead of relying upon the use'of a 'taperedl mold-cavity for effecting .the discharge ofthe pig. The inner end ofthe plunger constitutes a plug, which is preferably shaped so as to form a pig with a projection'" at the end, the

purpose being to afford means by which the pig may readily be-seized or handled.

For the purpose of moving the plunger 13 automatically I provide it with a rack 14, engaging a pinion 14', which is fixed to a shaft 153,' having pinions 15. The shaft 15 is journaled to portions of the mold, and the pinions 15 are in gearwith segmental racks 15', fixed to the frame 2, so that when the mold is rotated into inverted position the pinion A14 will be driven and the rack moved lengthwise, so as to eject the pig.

t The upper end of the mold has at the side of the mold-cavity a trough or basin 17 for receiving any surplus metal which may remain inthepouring-ladle after the mold has been filled, and' extending above this basin thereare preferably `stop-arms 18, the purpose ofv which I describe below: A

Above the mold is a vertically-movable end piece or plug 19, whichlis shaped like the end piece of the plunger 13 and is vertically mov.-v able by a plunger 20, operated by acylinder 21, the motive power of which may be compressed air or water. The plug 19 is preferably removably attached to the plunger 2O by a key-22, so that it may be replaced when IOO desired, and the plugs 13 and 19 are watercooled by flexible inlet and outlet pipes 19. The pipes 19, which conduct the water to and from lower plunger 13, extend through the rack 14 and are shown at the lower end of Figs. 1 and 2.

23 is an arm pivoted to a bracket 24 and extending down into the basin 17, having at its lower end a projection or tongue 23.

25 25 are wheels journaled in the uprights of the machine-frame and adapted to constitute rests for the trunnions of the ladle, and 25 is a spout which conducts the tnetal to the cavity of the mold 3.

The parts being in the position shown in Fig. l, except that the upper plug 19 is retracted above, the mold, and the mold being water-cooled by passage of water through its hollow walls 4, molten metal is charged into the ladle 25" from a furnace or converter in proximity to which the casting-machine is set, and the ladle is tilted on the wheels 25, so as to discharge the molten copper into the mold. The ladle has a capacity just a little in excess of the capacity of the mold. When the copper has risen in the mold to the desired height, which may be indicated by a mark in the mold-cavity, the ladle is righted and is moved on the wheels so as to bring its Ipouring-spoutover the basin 17, and any surplus metal which may remain in it is then poured into the basin, frotn which it is afterward removed, as explained below. When the mold has been filled, the plunger 20 is brought down, and the plug 19 enters the still molten copper and shapes the end ot' the pig, which rapidly sets, because of the cooling of the mold and plunger by water. The down pressure on the plunger 2O need be sufficient only to shape the end ofthe pig and is uotsuicient to exert undue strain upon the machine or the setting metal of the pig. The plug 19 is then retracted and the mold rotated on its axis into inverted position, and during such rotation the rotation of the pinion 14 moves the rack and ejects the pig from the tnold. The same motion of inverting the mold causes the arm 23, which is upheld by the bracket 24, to loosen the surplus piece of copper in the basin 17. If this piece of copper should stick to the arm 23, it is disengaged therefrom when it strikes the arms 18, and when themold is inverted the loosened piece of copper drops freely from the basin. It is then returned to the refining-furnace for retreatment, or, it' desired, it may be thrown into the mold and incorporated in the next pig in order that no waste shall occur. After the discharge of the pig the mold is immediately righted, and another pig can then be cast.

can be carried on with the labor of only one man.

The operation is thus very rapid and- If desired, the end plug 19 may not be used, in which case the upper end of the pig will not be shaped as described above and the side supplement mold or basin will not be used.

In Figs. 4, 5, 6, and 7 ofthe drawings I show pigs which are cast in my mold. Their design is such that they are shapely and. easily handled. By reason of being cast in a watercooled mold, in which they chill quickly, they are smooth and uniform in appearance, and if they are discharged into water from the molds while still hot the coating of black oxid will be removed and they will present a bright appearance. All the tins are purposely concentrated by the design of the pig for ready and complete removal by suitable trimming machinery, and such tins, containing large proportions of suboxid, are then returned to the rening-furnace for retreatment, or, if desired, they may be placed in the mold and become incorporated in the next pig that is cast, thus preventing every item of the waste that now prevails.

Within the scope of my invention the apparatus may be moditled in various ways, since What I claim, and desire to secure by Letters Patent, is-

1. A pig-casting machine having a mold, and means at the ends of the mold-cavity adapted to form on the pig reduced projecting portions 3; substantially as described.

2. A pig-casting machine having a mold adapted to be inverted, an ejector for the pig, and means whereby the inverting of the mold will automatically move the ejector; substantially as described.

3. A pig-casting machine having a mold adapted to be inverted, an ejector for the pig, said mold and ejector being water-cooled; substantially as described.

4. A pig-casting machine having a pivoted mold adapted to be rotated to discharge the pig, gearing moving with the mold, and an ejector-plunger connected with said gearing and adapted to be moved thereby; substatitially as described.

5. A pig-casting machine having a pivoted moldadapted to be rotated to discharge the pig, gearing moving with the mold, and an ejector-plunger having a rack portion connected with said gearing and adapted to be tnoved thereby; substantially as described.

6. A pigcasting machine having,r a mold normally in upright position, said mold having at its end a movable plug, and means tor projecting the plug by the rotation of the mold; substantially as described.

In testimony whereof l have hereunto set my hand. V

RALPH BAGGALEY.

Vitnesses:

GEO. B. BLEMING, I-I. M. CORWIN.

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